New alternator output voltage
1990 BMW 325i

New Alternator Output Voltage

(1990 BMW 325i)
I just replaced the Alternator in my 1990 325i. All is fine but have a question about the output voltage to the Battery. According to the meter with the engine running, the battery is getting about 13.7 volts from the Alternator. Is this enough to keep the Battery Charged and Operate the Engine's Electronics? Should it be 14+. If so, is there any kind of adjustment at the Alternator to increase the Voltage? I bought the new Alternator at NAPA for my Vehicle, the BOSCH 90 Amp NAPA Part# NAE14813. Thanks
1 answer & 1 comment
Popular Answer
on December 26, 2010
13.7 at idle is plenty. You may even find that at above idle the alt may put out over 14. And no there is no adjustment to increase output
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on December 26, 2010
Great!!! Thank you!!
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on December 26, 2010
13.7 at idle is plenty. You may even find that at above idle the alt may put out over 14. And no there is no adjustment to increase output
Sign in to reply
on December 26, 2010
Great!!! Thank you!!

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